there is a C-ring on it that you need to take off then it should just come off with a set of jaw pullers. go to harbor freight they have a 4piece set for 15 bucks or so.... lifetime warrenty too... trust me you will be taking them back once in a while.
hit me up on Yahoo latter and i can help ya out with it. i still have a compressor setting in my computer room. i will be off at 2am
